I have a 1991 883 xlh i was riding pulling a hill geared down let out on the clutch and a terrible vibration came in it. Now when you ride the vibration is so bad in 5th gear running 55 mph it hurts your feet. I have checked everything and nothing is loose. Had some problems in the top end thought that may have been part of it. All new parts and still vibrates. Has a lil over 15,000 miles on it, im thinking its most likely in the clutch. I am third owner so i have no idea if it has ever had a clutch. If someone could point me in the right direction i would greatly appreciate it.